Figure 1.

Scatter plot of individual antibody levels during sheep scab outbreak. Horizontal black line indicates the 0.06 OD₄₅₀ threshold above which samples were classified as positive for sheep scab. Animals were treated after the mid-outbreak sampling point. Group means indicated by black horizontal lines within individual scatter plots. Thirty seven extreme values (OD ₄₅₀ values > 0.2) removed from mid-outbreak and post-treatment sample sets to aid with data visualisation, though still contributed to summary statistics.